Those who may have contracted the virus from this second person with the measles diagnosis could see symptoms — fever, unexplained rash, cough, runny nose, watery eyes — anytime between now and Feb. 19, according to a Public Health – Seattle & King County news release.

Because the virus is extremely contagious, anyone with symptoms should notify a health-care provider immediately and stay at home to avoid exposing others to the disease. If a visit to a health-care facility is necessary, officials recommended calling ahead to make sure arrangements are made to keep other patients from contracting measles.

Measles spreads mainly through the air after a person with measles coughs or sneezes, according to health officials. Because most people in King County have immunity to measles through vaccination, the public-health department said, the risk of the disease spreading more to the general public is low.

People who know they were in the areas indicated above should, however, check to see if they have been vaccinated or had measles before.

The first measles case in King County this year was confirmed Jan. 25 by a traveler who made a stop at Sea-Tac Airport on Jan. 18 between 11:30 a.m. and 6:30 p.m. More information on where travelers could have contracted the virus then is available on the Public Health – Seattle & King County website.